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US 7,077,778 B1Granted
Bull gear of differential gear assembly
OwnerKoji Irikurainventor
Life of this patent
Estimating the term…
Abstract
A lower cost differential gear assembly capable of inputting driving force through a differential gear, whose teeth have sufficient strength is provided. To achieve the object, the differential gear is constructed by engaging a gear part provided with teeth at equal intervals on one of its perimeter surfaces, and a support part pivotally supported by right and left axles through engagement of a spline. Accordingly, the gear part can be formed from a high strength material and the support part can be formed from a lower cost material.
Claims11
A bull gear of a differential gear assembly, comprising:
- a ring gear for inputting torque from a transmission;
- a support member supporting a differential pinion and supported on an axle, the support member transmitting the torque from the ring gear to the axle through the differential pinion, wherein the ring gear and the support member are toothed to be coupled together so as to be relatively axially movable and not-relatively rotatable, the ring gear having a first surface perpendicular to the axle, and the support member having a second surface to be leveled with the first surface of the ring gear;
- and
- a retaining member abutting against the first and second surfaces so as to prevent the ring gear and the support member from relatively axial moving,
- wherein the retaining member is provided on a pinion shaft supporting a pinion for transmitting torque from the transmission to the ring gear.
2 more elements
Dependencies are inferred from the claim text.